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<head><meta charset="utf-8"><title>I-prioritize #78671 ICE: compiler/rustc_middle/src/ty/subst… · t-compiler/wg-prioritization/alerts · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/index.html">t-compiler/wg-prioritization/alerts</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2378671.20ICE.3A.20compiler.2Frustc_middle.2Fsrc.2Fty.2Fsubst.E2.80.A6.html">I-prioritize #78671 ICE: compiler/rustc_middle/src/ty/subst…</a></h3>

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<a name="220515292"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2378671%20ICE%3A%20compiler/rustc_middle/src/ty/subst%E2%80%A6/near/220515292" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> triagebot <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2378671.20ICE.3A.20compiler.2Frustc_middle.2Fsrc.2Fty.2Fsubst.E2.80.A6.html#220515292">(Dec 20 2020 at 11:11)</a>:</h4>
<p><span class="user-group-mention" data-user-group-id="3111">@WG-prioritization/alerts</span> issue <a href="https://github.com/rust-lang/rust/issues/78671">#78671</a> has been requested for prioritization.</p>
<h1><a href="https://forge.rust-lang.org/compiler/prioritization/procedure.html#assign-priority-to-unprioritized-issues-with-i-prioritize-label">Procedure</a></h1>
<ul>
<li>Priority?</li>
<li>Regression?</li>
<li>Notify people/groups?</li>
<li>Needs <code>I-nominated</code>?</li>
</ul>



<a name="220603256"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2378671%20ICE%3A%20compiler/rustc_middle/src/ty/subst%E2%80%A6/near/220603256" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> rylev <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2378671.20ICE.3A.20compiler.2Frustc_middle.2Fsrc.2Fty.2Fsubst.E2.80.A6.html#220603256">(Dec 21 2020 at 16:40)</a>:</h4>
<p>I was able to reproduce with code that's a little more sensible and more likely to be something someone would write: <a href="https://github.com/rust-lang/rust/issues/78671#issuecomment-749067604">https://github.com/rust-lang/rust/issues/78671#issuecomment-749067604</a> Not sure if this is P-high. It seems this was added to the 1.49 milestone</p>



<a name="220633709"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2378671%20ICE%3A%20compiler/rustc_middle/src/ty/subst%E2%80%A6/near/220633709" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Noah Lev <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2378671.20ICE.3A.20compiler.2Frustc_middle.2Fsrc.2Fty.2Fsubst.E2.80.A6.html#220633709">(Dec 21 2020 at 21:39)</a>:</h4>
<p>Pretty sure this shouldn't be P-high: the feature is experimental, and it says so before it crashes.</p>



<a name="220633716"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2378671%20ICE%3A%20compiler/rustc_middle/src/ty/subst%E2%80%A6/near/220633716" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Noah Lev <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2378671.20ICE.3A.20compiler.2Frustc_middle.2Fsrc.2Fty.2Fsubst.E2.80.A6.html#220633716">(Dec 21 2020 at 21:39)</a>:</h4>
<p>Probably P-medium.</p>



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<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2378671%20ICE%3A%20compiler/rustc_middle/src/ty/subst%E2%80%A6/near/220791723" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> apiraino <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2378671.20ICE.3A.20compiler.2Frustc_middle.2Fsrc.2Fty.2Fsubst.E2.80.A6.html#220791723">(Dec 23 2020 at 14:12)</a>:</h4>
<p>(assigned a <code>P-medium</code>)</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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